The full release package (version 0.17) has "recreation/music/CD Player"
directory containing one clip art. But some operation systems like Linux cannot
handle such directory names including a space character correctly.

A space is a valid char. Both Gnome and KDE handle it propperly. On the terminal
you must escape it either by quoting the path: "/foo/bar/my space path/" or by
escaping the space: /foo/bar/my\ space\ path.
If no one has a counter claim to this, this bug should probably be closed.

There's no good reason to keep the space character. It serves no purpose, and
we're trying to be as cross-platform-friendly as possible here. Additionally,
in this case, there's no reason to keep that _directory_ at all; it has only one
image in it, which ought to be moved to the parent directory.